Oil-burner construction



Jan. 19 ,1926. 1,570,434l

L. s. cHADwlcK ET AL OIL BURNER CONSTRUCTION Filed Oct. 26, 1922 5 Sheets-Sheet 1 Jan. 1'9 ,'1926,

L. S. CHADWICK Er AL 5 sheets-sheet 2 File@ oct. .26, 1922 Jan.- 19,1926. 1,570,434

- L. S. CHADWICK El' AL OIL BURNER CONSTRUCTION File'd oct. y26, 1922 5 sheets-Sheet s' @LLAA Jan. 19 1926.l 1,570,434

L. s. CHADWICK ET AL OIL BURNER CONSTRUCTION Filed oct. 26, 1922 5 sheets-snaai 4 [Muffy/ani, hm

. 1,570,434 L.. s. -cHADwlcK Er AL i OIL BURNER CONSTRUCTION Filed oct. 2e, 1922 s sheets-sheet 5 Jan. 19 ,1926.j

Patented Jan. 19, 1926.

UNITED sTA'rEsfPATENT oFFicE.

lHIEIG-IEITS, OHIO, ASSIGNORS TO THE CLEVELAND METAL EB'ODUC'JJSl COMPANY, OF CLEVELAND, OHIO, A CORPORATION4 OF OHIO. v

oIL-BURNER coNsTBUoTroN-- h Application led October 26, 1922. 'Serial No. 596,970.

scription, reference being had to the accompanying drawings.

This invention relates to improvements in o1l burners, especially of the tubular type,

and more particularly as said improvements pertain to the Wick raising mechanism.'

Embodiments of the invention are disclosed but not claimed in the applications of Lee S. Chadwick, Serial Nos. 528,813 and 541,-

898, filed January 12, 1922, and March 8,

1922, respectively.

The objects of the invention are to provide wick raising mechanismfor oil burners which permits ofeasy insertion and removal of the wick; which automatically assumes positive connection withthe'wick when the latter is inserted in the' burner and` the mechanism actuated to vretract the wick; which likewise releases the wick when the latter is fully projected by said mechanism; to lprovide a burner construction which insures easy action of the wick and wick carrier by properly guiding them within the burner, thereby preventing .binding or undue friction and assuring accurateposition-l ing of the top of the wick with respect to the upper ends of the wick tubes; .which readily adapts itself to slight varlations in the sizes of wick carriers; wherein practically all parts are made of die-formed sheet metal stampings Ipromoting lightness, durability, accuracy and economy; and to so form said parts as to facilitate assembly', expedite manufacturev and accordingly efect'a comparatively low productlon cost.

A further object of the invention is to provide a tubular oil burner wherein the inner wick tube has a lateral extension through which exteriorly operated means acts to raise and lower the wick, said lateral extension projecting only a comparatively short distance into the central space enclosed by the burner so as to leave said ,lar wick at substantially diametrically i space unobstructed forl the accommodation of appurtenances such as the air distributing member or flame spreader, latch mechanism therefor, and wick stop mechanism.

\ Another object attained through the making vof the lateral extension of the inner wick tube relatively slight is the production of a substantial inner tube that will -revtain its shape during the assembling of the burner and impart rigidity to the completed burner structure.

A still further object is to provide a burner of the above nature wherein the wick raising mechanism isA situated well' to one side of the central space enclosed by the burner, for thereasons already related, and

yet wherein it has connection with the tubuposite points, thus assuring an even lifting and perfect action ofthe wick and avoiding any tendency for it'to tilt which might cause it to bind within the wick space.

Another object is toutilize the `lateral extension of the inner wick tube as a guide for the rod which operates inside it and has operative connection with the wick, and for the channel shaped member which embraces it exteriorly andhas connection with the upper end of the rod and thro-ugh which the rod is operated.

Further objects, whichhave to do more particularly with lstructural'v refinements, will become apparent as this description proceeds. .A

In the drawings, Fig. l is a central vertical sectional view through 'a burner embodying our invention and equipped with a iame spreader and drum, only the lower part of the latter beingincluded, and the wick bein shown as retracted belov' burning position; Fig. 2 is a sectional view through the burner substantially on the line 2-2 of Fig. 1 and looking in the direction indicated by the arrows associated with said line; Fig. 3 is a section on the line 3-3 of of some of the parts of the Wick raisingl mechanism; Fig. 7 is a similar view of parts shown m Fig. 6, 1n separated condition;

. closure of the same reference may. e had to .the application of Lee S.'Chadwick, Serial No. 571,671, iledJune 29,1922; and the latch mechanism for locking the liame spreaderto parts of the burner is covered in our joint application Serial No. 528,833, filed `Jan. 12,1922. The drum C, with its means of support and connection with the v burner, is shown in the application of Lee S. Chadwick, Seriall No. 539,079 iled'February 25, 1922.

The burner A comprises inner and outel` wick tubes 1 and 2, respectively, which are joined together at their lower ends by an annular wall 3 which is formed, in the present instance,'by an integral part of the outer wick tube. The tubes 1 and` 2 and wall 3 enclose a wick space 5 towh-ich oil is supplied through vthe usual 'itting 6. The foregoing parts in general, are common to well known types of tubular burners; but to adapt the structure to our present improve-A ments, the inner wick tube 1 is formed substantially heart4 shaped, as most clearly shown in Fig. 3, to provide a restricted ofi'- set portion 8 which opens into an enlargement 9 of the wick space 5. The offset portion 8 is comparatively shallow in a radial direction `so as not .to obstruct the central portion of the space enclosed by the burner and which is occupied by wick stopmechanism hereinafter .referred to. Within the enlargement 9 of the wick space is guided a wick elevator or yoke 10 havin side branches 11 that extend about the Wic space and terminate in langular extensions 12 at substantially diametrically opposite points of the wick s ace.- The yoke 10 is preferably formed of s eet metal, and to give it rigidity is reinforcedeon its under side by a stiliener 13 of substantially the same shape as the yoke. Said stitener has a segmental horizontal wall 14 'which` is soldered or otherwise secured at its edge to the edge portion of the yoke, and a vertical wall 15 v which follows the general contour of the inner side of the yoke and is secured to the yoke through lugs 16 that are turned down over the outer side of the wall 1 5, said lugs,

and the meeting edge ortions of the wall 15 and yoke, being so dered or 'otherwise secured together. The yoke, as thus formed,

includes an arm 17 which enters the previously mentioned restricted offset ortion 8; and to maintain the arm central y within the offset portion and to properly guide it during its vertical movement therewithin, the wall 15 has lugsl 18 projected outwardlyv therefrom for sliding engagement with the opposite walls of the offset portion 8. The inner wick tube has ribs 19 betweenwhich and the opposite surface of the outer tube the wick elevator or yoke 10 is freely movable; and the outer wick tube is provided with ribs 22 vfor guiding the wick and its carrier properly within the wick space and reducing their frictional contact with the 'outer tube. In referring to this feature of the invention -we call attention to its distinctions and advantages over well known prior forms of Wick guiding means such, for instance, as when the wick rides upon and is guided solely by the inner tube, with the wick carrier situated on theouter side of the wick, and wherein there is more or less binding and tilting of the wick, making the raising and lowering of the wick diiicult and resulting in an luneven flame; where the wick, equipped with a perforated carrier, is raised and lowered by star `wheels or pinions meshing with the perforations of the carrier land carrier fit loosely between the wick tubes andare lifted by a suitable member from below, in which vconstruction there is a tendency for the wick to vwabble because of itslooseness and this'resul-ts in an uneven flame and in the Wick not being properly centralized Within the wick space.-

It will be readily seen that these diiiiculties are obviated in our construction because the wick carrier is positively `guided by and between` the longitudinal ribs 22 that are spaced apart circumferentially of the outer wick tube 2, and is lifted 4at diametrically opposite pomts so as to avoid any tiltino or binding tendencies; and moreover, shoul there be any variation .in the sizes of wick carriers, which not infrequently happens, the outer wick tube will ad'ust itself thereto by yielding inwardly slightlylbetween the ribs. The ribs, as will be seen from Fig. 1,

. stop short of the lower end'of the tube and aperture in the lower wall of the arm -beyond which it is upset or riveted, as indicated at 29 in Fig. 2. At its upper end, the rod is guided within a sleeve 30 that forms an extension of the restricted offset portion 8 and which rises from the top wall thereof, the inner wick tube being cylindrical above said offsetportion, as indicated at la. The rod 25 terminates at its upper end in a head 32 which is separated from the body portion of the rodby a neck 33.

A rack member 35, preferably of sheet metal and 4of channelformation, is adapted to haveconnect-ion with the rod 25 through its extended side flanges 36 and 37. The.

connection is preferably effected by engaging the inturned bifurcated'upper end 39 of the ilange 37 about the neck .33 of the rod, and the key-hole slot 40 that is formed -in the inturned upper end of the flange 36 over the head 32 and-shifting it laterally so asl to cause the restricted end of the slot to cmbrace the neck, in which condition the parts may be securely heldv by turning a tongue 41 of the flange 36 downwardly over the flange 37 and engaging it through an aperture 42` that is formedtherein, as clearly shown in Fig. 2. One of the side flanges of the member`35 is provided with a series of slots 43- which extends upwardly a suitable distance .from-its lower end to effect a rack.

VArranged to mesh with the rack is a -pinion 45 that isfsecured to a spindle 46.

The spindle is journaled in bearing apertures in the opposite branches 47 and 48 of a bracket 49 that is secured to and depends from the lower end of the burner. The forward end of the spindle is equipped with a hand wheel 50 by means of which the spindle may be turned; and from the foregoing description it is evident that when the spindle is turned it will move the rackmember 35 vertically, and said movement will be trans` vided with the usual wick carrier 61 that` encases the lower portion of the wick and is turned inwardly and upwardly about its lower end, is adapted to bear uponthe horizontal portions of the extensions 12 and to fit between the vertical portions thereof and the opposed partsof the grips 55. With the wick y,in this position the upper end of its carrier is engaged beneath the lips 57 of the 'grips 55. To insert a wick within the burner, the elevator is raised to its highest position when the grips will ptilotrude above the wick tubes and through t eir resiliency and formation spread out considerably. See

Fig-8. The wick is-then lowered into the wick space until the bottom of its carrier engages the horizontal portions of the extensions12. The spindle .46 is now rotated in a direction to lower the elevator, and as it and the-wick descend the grips 55 are forced inwardly by contact with the outer wick tube to engage their lips 57 over the upper edge of the wick carrier. 'When the. yoke l() is elevated toits A highest position 'the gripsy l will automatically separate -to release the carrier so that the wick and carrier may be lifted bodily from the burner.

Situated to the rear of and guided within the rearbranch 48 of the Vbracket 49 is wick stop mechanism designated generally by the letter D and fully disclosed in the application of Lee S. Chadwick, Serial No. 528,813 hereinbefore referred to. This mechanism, as will be seen by reference to said application, oo acts with the wick adjusting spindle to arrest the movement of the wick when the same has been elevated to a predetermined Yfheight, and it includes the air controlling member or flame spreader B through the in tervention of which said mechanism is coupled with the wick raising spindle when said member is engaged and lifted by-the burned portion of the wick, the mechanism further serving to lift the flame spreader to operative position when the wick occupies any position within its burning range.

To conceal Vthose parts of the wick stop mechanism which extend below the burner tubes and to protect them against being tampered with unnecessarily we provide a shield 65, the upper end of which is shown as notched at 66 to accommodate the side flanges of the-bracket 49, and at 67 to accommodate the spindle 46. The shield may be inserted between the rear branch 48 of 'the bracket 49 and the lower end of the rack member 35 only when the lrack member is fully elevated. After its upper end is so lengaged between these parts, its lower end may be swung rearwardly to project the lugs 68 beneath thelower end of the rear branch 48 of theA bracket and engage a spring tongue 70 between the lugs 68 and in holding engagement 'with the adjacent edge portion of the shield 65. Thetongue 70 which serves to frictionally hold the shield in place, may

be formed by an yextension of a brace 71 that connects the lower end of the bracket vto the rear portion of the burner. It will thus be seen that the shield may be readily removed for the purpose of inspecting, adjusting or repairing the parts which it normalli,T conceals, by releasing its lower end from the spring tongue 70 and dropping it.

A modification of the wick grip is illustrated in Fig. 9 which is distinguished from the previously described form by providing its inwardly direetedvupper edge portions the openings so as to restrain the carrier against any appreciable vertical movement with respect to the wick grips.

In both forms ot the wick grip illustrated in Figs. 9 and 10 the action is automaticin taking hold of and releasing the wick, the

upper edge of the outer wick tube serving to cam the grips inwardly as the parts are retracted, while the form and resiliency of the grips causes' them to withdraw from the wick as the parts are projected above the outer wick tiube.

The upper end of the wick grip c illustrated in Fig.i11, is turned laterally and the upper edge of the laterally turned portion is shown as provided with teeth 82 for engagement over the top edge of the `wick carrier andvinsertion into the material of the wick, with this form ot the grip,

`when the parts are fully projected for the purpose of removing or inserting a wick the f laterally extended upper end of the grip springs out over the top edge of the outer wick tube andtends to hold the parts against i retraction. This is done in order to compel the. operatorvto press the expanded laterally turned portions "of the grips inwardly into holding engagement with the Wick and carl .rie'r before` the grips are permitted to de sncend-in order to insure that the grips will ;;'lie fproperly engaged With the carrier; for

it might happen occasionally in the previouslyy described forms that the gripsy would de scendi" in advance of4 the wick and would noty engageover thetop ofthe carrier. Howfevfer, the former automatically acting grips p have `.j orov'en highlyfsatisfactory.

The Same .principle is involved in the grip 55d that is illustrated in Fig. 12. The grip Ais Vprovided along its upper edge with teeth 84, and a detent 85,`preferably bearing the word Press 'or some equivalent expression, is struck out yfrom the metal whereof the `grip is formed and is sprung outwardlybeyond the plane thereof yso as to engage the top edge ot the outer wick tube and arrest downward movement of the parts until the detents of the opposed grips are pressed in-- wardly to escape the top' of the wick tube,

which action results in the prongs 84 being engaged over the top or' the carrier.

I The grip 55, shown in Figs. 13 and 14, is

quite similar to the one just described, the

same being equipped with teeth 86 forengagement over the top edge of the carrier and with the wick, and with a spring detent 87 that is struck out from the metal from which the grip is made and has its lower free edge provided with prongs 88 vwhich are fadapted to be engaged within the perfora- Vgrip 55t has a series of inwardly directed projections 9() and the grip 55g, an inwardly directed depression 91, formed in their respective body portions, which frictionally engage the wick carrier, and, in each instance, drag it Vdownwardly when the elevator descends causing the wick and carrier to move in unison with the elevator,` thus insuring the wick and carrier to move in unison with the elevator thus insuring the proper engagement of the teeth of the grip over the upper edge of the carrier and into the wick. l

',lo adapt it for use with the form of grip designated 55h in Figs. 17 and 18, the wick carrier has a` series of apertures 94 extending' circumferentially about its upper end into ones of which the expanding portions 95 of the grips are adapted to be snapped, the parts coaeting much like the ordinary glove fastener. Thus, in this form of the invention, a positive connection between the grips and carrier is immediately ei'eeted.

Having thus described my invention, what I claim is:

1. In a burnerv of the character set forth, the combination of a structure enclosing a wick space and havin arlateral offset portion extending upWar ly along one sideof the structure and ope-ning throughout substantially. its height into the wick space, a. wick within the wick space, a member guided for vertical movement by and Within the lateral offset portion ofthe structure, connections between said member and the Wick, a member slidableupon the exterior of and thus guided bythe lateral offset `portion and having its upper'end attached to the corresponding end of the aforesaid member,`and means exterior of the burnerstructure for adjusting the wick through the intervention of said members.

2. In a burner of the character set forth,

the combination of a structure enclosing a IHS wick within the wick space, a member movoffset portion and having its upper end attached to the corresponding end of the aforesaid member, a spindle rotatably supported by the structure,- and a pinion secured to' the spindle and cooperatingwith the rack member. Y

3. An oil burnerv comprising an inner and an outer wick tube and wick stop mecha-v nism occupying the central portion of the space enclosed by the inner wick tube, said inner wick tube having an inwardly offset portion situated to one side of the central portion of said space, a wick occupy' ing the space between the wick tubes, andv exteriorly operated means acting through said offset portion for raising and lowering the wick. j

4f. An oil burner comprising an' inner and an outer wick tube enclosing an annular wick space between' them, the inner wick tube having an inwardly offset portion, `a wick elevator extendingvpart way around thewick space, a tubular wick in theJ wick space, said wick having connection at diametrically opposite points with the elevator, and yex-l teriorly operated means acting through said offslet portion for raisingand .lowering the w1c v 5. In a burner of the character ,set forth, the combination of an inner and an outer wick tube enclosing a wick space between them, one of said tubes having an offset portion, a member movable vertically within said offset portion, a wick within the wickspace, a segmental wick elevator below the wick and havingat about its middle a lateral extension projecting into the aforesaid offset portion, the lateral extension' being4 connected to the aforesaid member, wick grips carried by lthe ends of the elevator for separably connecting it to the wick at diametrically o posite points, and means for adjusting tiie aforesaid member vertically thereby to raise and lower the wick.

6. In a burner of the character set forth, the combination of an inner and an outer wick tube enclosing between them an annular wick space, one of said tubes hav' a p lateral offset portion, a member mova le vertically within said odset portion, a tubular wick within the wick space, a `carrier y on the wick, a segmental wick elevator extending substantially half way about the wick space and having at about its middle 'a lateral arm extending into' the aforesaid offset portion where it is attached to the aforesaid member,' wick grips carried by the t elevator for'effecting separable connection 'between the wick elevator and the carrier wick, and means for adjusting the aforesaid wick tube enclosing member vertically thereby to raise and lower` the wick.k

7. In a burner of the character set forth, the combination of an inner and an outer wick tube enclosing between them a wick space, a wick elevator within the wick space, a wick and its carriery adapted to be inserted into lthe wick space and rest upon the wick elevator, resilient grips extending upwardly from the wick elevator and adapted to embrace the wick carrier and means for adjusting the' wick elevator yvertically to fraise and lower the wick,

8. In a burner of the character set forth, the combination of an inner and an outer wick tube enclosing between them an annular wick space, one of said tubes having an offset portion, a member movable vertically within said offset portion, a wick elevator` extending substantially halfway around th wick space and having at vabout/its center a lateral arm that projects into the aforesaid offset portion where it has connection with the said member, a wick and its carrier adapted to be inserted intothe wick space and rest -upon the wick elevator, re# silient grips extending upwardly from the ends of the wick elevator and adapted to be forced into holding contact with the wick carrier by the outer wick tube when the parts are retracted into the wick space, and means for adjusting theaforesaid member -vertically thereby to raise and lower the wick. 1

9..In a burner of the character set forth, the combinationof an innerv and an oute` between them an annular wick space, t e inner vtube having a radially disposed offset portion, a rod movable vertically within said portion, a wick elevator extending substantially half-way about the Wick space and having a central lateral extension projecting into the aforesaid offset portion of the inner wick tube yand connected to the aforesaid rod, the wick .elevator having at its ends raised beafrln portions, resilient wick grips secured to an rising from the opposite ends ofthe wick elevator and .having inwardly directed lips lat their upper ends, a wick andv its carrier wick tube enclosing between them an annularwick space, the inner wick tube having a substantially radial inward extension thereby to provide an offset of the wickv space, a rod movable vertically within the offset, a segmental wickelevator within the wick space and having a central lateral extension projecting into the offset and having connection with the rod, the offset and lateral extension having cooperating guide l portions for properly positionlng the elevator within the space during its vertical movements therewithin, an annular wick within the wick space, means separably connecting the Wick and elevator, and'means for adjusting the aforesaid rod vertically within the offset thereby to raise and lower the wick.

11. In a burner of the character set forth, the combination of an inner and outer wick tube enclosing between them an annular wick space, 'the inner tube having a substantially radially disposed inward projection to provide an onset for the wick space, a rod movable vertically within the offset, a wick elevator extendin part wayaround the wick space and having a lateral extension projecting into the offset and having connecvided with a tongue and the-flange extension.

tion with the rod, a wick within the wick space, means separably connecting the wickand elevator, a channel shaped rack member Vembracing 4the radial extension of the inner wick tube and having its upper end connected to the corresponding endof the aforesaid rod, a spindle rotatably supported below the wick tubes, means for rotating the,v splndle, .and avpinion on'the spindlefor coi' operation with the aforesaid rack member.

' 12. In -a burner of the character set forth, the combination of a structure enclosing a wick space and having` a comparatively nar- ,row lateral extension the interlor whereof opens into the wick space, -a rod movable vertically within' the lateral extension, a wick within the wick space, connections between'the wick. and the lower end of the aforesaid rod, the upper end of said rod projecting above the lateral extension and terminating ina head, a channel member r' embracing the lateral extensionand having extended side flanges which terminate at their vupper ends in inwardly directed lug, one having a key hole slot and the other a bifurcation, the bifurcation being engaged beneath the head', of the rod and the restricted portion of the key hole slot embracing the rod immediately below the head, the lug having the key hole slot being pro-- having the bifurcation being provided with an aperture through which the tongue 1s engaged thereby to securely hold the parts together, and mea'ns for adjusting the channel member vertically thereby to raise and lower the wick. j

13. In a burner of the lcharacter set forth, the combination of a` structure enclosing a wick space and having a lateral extension the interior whereof opens into the wick space, a rod movable vertically within the lateral extension, a wick within the wick space, connections between the wick and the lower end of the rod, the upper end of said rod projecting above thelateral extension and having longitudinally spaced abutments, a member extending up along side the lateral extension and having opposed parts which embrace the rod between said abutments and interlock with each other to hold them in position, and means for adjusting the channel member vertically thereby to raise and lower the wick.

14. ,A connection of the character described comprising a rod having longitudinally spaced abutments, and a member adapted to be connected to said rod and having opposed resilient branches terminating at their ends in parts designed to embrace the rod between saidk abutments and. interlock with each other to hold them against separation.

15. A connection of the character described comprising a rod having at one end a shoulder beyond which projects a neck that terminates in a head, and a member adapted v to 'be connected to said rod and having opposed resilient branches terminating at their ends in inwardly directed. lugs, one of saidV lugs having a key hole slot and terminating in a tongue, while the otherlug is bifurcated,

the bifurcation of the last mentioned lug being arranged to embrace the neck of the rod adjacent the shoulder and the lug having the key hole slot being adapted to be turned down over the head and shifted laterally so that the neck will.be embraced by the restricted portion of the slot, -thebranch having the bifurcated lug being vprovided with an aperture'through whichthe tongue of the other lug is adapted to beturned for the purpose of holding the parts inv assembled condition.

16. In a burner of the character set forth, the combination of a structure enclosing a wick space and having a lateral extension the interior whereof opens into the wick space, a rod within the lateral extension, a

wick Within the Wick space, connections be- 17. In a burner of the character set forth,

the combination of a structure enclosing a wick space and having a lateral extension the interior whereof opens into the Wick space, a rod within the lateral extena wick within the wick space, consion, v

between the rod and wick, the upnections perl end of the rod projecting above the lateral extension and there being-formedV with a groove to provide opposed abutments .spaced apart longitudinally of the rod, a channel member embracing the lateral extension and having its side flanges extended and turned inwardly at their upper ends and provided with openings for -interlockingengagement with the' rod between the aforesaid abutment's, one of the flange extensions having a part cooperating with the other iiange extension to hold them -against separation,l and means forv adjusting the channel member vertically thereby to raise and lower the wick. l v l 18. In a-burner of the character set forth,

vthe combination of a structure enclosing a `wick space and having a lateral extension vthe interior whereof opens into the wick l spacefa wlck within the wick space, a rod within the lateral extension and having its lower end reduced, a sheet metal wick elevator within the wick space below the wick and having an `arm projecting into the lateral extension and provided with an aperture through which the reduced lower end,

of the rod is extended, a stiffener for the wick elevator applied to the underneath side thereof and having an arm corresponding to that of the elevator and provided with' an aperture through which the extremity` of the rod is extended and beyond which it is riveted to hold the parts' together, land means for adjusting the rod vertlcally thereby to raise and lower the wick. v

19. In a burner of the character set forth,

- the combination of a structure enclosing'` an annular wick space, a tubular wick within said space, .a wick elevator within the wick space sustaining the wick, means for adjusting the elevator vertically withinthe wick space,.the ends of the elevator terminating i in angle lportions having vertical and horithe latter constituting' seats` zontal iianges, for the wick, and wick grips having their` lower ends extending under the horizontal anges and upwardly over and the purpose specified.

, 20. In a burner of the character set fcnfth., the combination of an inner and an outer wick tube enclosing between them a wick space, a wick elevator within thewick space, a wick and its carrier adapted to be inserted into the wick space and to rest upon the wick elevator, wlck gripsof resilient mate- 'carrier so as to ex rial extending upwardly from the wickA elevator and terminating at their upper ends' in lateral branches which arenormally substantially tangentially disposed to the wick j and beyond the upper Vend. of the outer wlck'tube and which have downwardly' alongside the. vertical flanges, as -and'for at their upper edges means for engaging over the top ofthe wlck carrier, whereby the Vwick elevator is prevented from dethe maximum oil level therein, connections between said member and the wick, a member exterior of the vwick space and having its upper end attached to the corresponding end of the aforesaid member, yand means ex- `terior of the burner structure and cooperatmfr menntioned member for adjusting the wick through the intervention of said members. 22. In a burner of the character set forth, the combina-tion ofa structure enclosing `a wick ispace, a wick and its carrier within with the lower portion of the second the wick space, afmember guided for vertical movement by and within the wick space, a wick elevator supporting the wick carrier and holding it firmly at both top and'bottom,- said wick elevator being connected .to

the aforesaid member, and means exterior vof the burner structure for adjusting the wick through the'intervention of said member and the wick elevator. Y l

23. In a burner of the character set forth, inner and outer wick tubes, a wick and carr rier between the tubes, a `rack and pinion located below the burner, means connecting "therack to the wick and carrier, said means including a movable member, Vguiding means positively restricting said member to a vertical course of movement, said member being positively connected to the wick ,and carrier.V

when the carrier is retracted into the space between the tubes and said member automatically-freeing itself from the wick and carrier when'the top of the carrier is projected above the tubes. v

24. An oil burner comprising an inner and an outer wickV tube, said inner wick tube having an inwardly offset portion situated to one lside ofV the center of the tube, a wick occupying the space between the wick tubes, and exteriorly-l operated means acting through said offset' portion for raising and lowering the wick.

25. In a on. the outside of the wick, the outer tube having inwardly depressed longitudinal ribs `that are' spaced a j burner ofthe character setforth# 'inner and outer wick tubes, a wick between the tubes, a carrier material distance apart'circumferentially of the tube for guidingfthe carrier, and Imeans for moving the carrier.

26. In a burner of thev character set forth, Y

an inner wick tube, a -wall spaced outwardly therefrom to provide an oil chamber between the wall and tube, a wick and 'carrier within the oil chamber, a rack and pinion outside the oil chamber, means for rotating the pinion, means situated above the maximum oil level of thechamber and connecting the racli to the wick carrier so that rotary motion lof the pinion will impart verti-l cal movement to the wick carrier, and further means 'to prevent tipping o'r tilting of the wick carrier during its vertical movement.

27. An oill burner comprising an inner and an outer wick tube, said inner wick tubo having an inwardly offset portion situated to one side of the center ofthe tube, a wick and carrier occupying the-space between the .separably connecting the wie wick tubes, exteriorly operated means acting through said offset portionfor raising and lowering the wick and carrier, and means to guide the carrier and prevent tipping or tilting when the carrier is raised or lowered.

28. In a burner of the character set forth, the combination of an inner and an outer wick tube enclosing between vthem a wick space, a wick elevator within the wick space,

a wick and its carrier adapted to be inserted into the wick space and rest upon said wick elevator, wick grips carried b the elevator and carrier to the elevator, means for adjusting the wick elevator vertically thereby to raise and lower the wick, and ribs in the tube adjacent the wick 'carrier for guiding the carrier in its movements.. t

In testimony whereof, we hereunto aiix our signatures. l

LEE S. .CHADWICK MARC RESEK. 

